Method of and system for displaying a plurality of user-selectable refinements to a search query

ABSTRACT

Method of displaying by a client application in communication with a search engine a plurality of user-selectable refinements to a search query including a search term, comprising: sending the search query; receiving search results and suggested search query refinements determined based at least in part on an analysis of groups of related search queries, each suggested search query refinement corresponding to a refined search query including the search term and an additional search term; displaying search results and, apart from a search bar, refinements, refinements being selectable by a user via a graphical object; receiving a selection of one of the refinements, the selection corresponding to a refined search query including the search term and an additional search term; receiving refined search results; and displaying refined search results and a visual representation of a refinement relationship between the search query and the refined search query. Related systems are also disclosed.

CROSS-REFERENCE

The present application claims priority to U.S. Provisional PatentApplication No. 61/841,269, filed Jun. 28, 2013, entitled “Method of andSystem for Displaying a Plurality of User-Selectable Refinements to aSearch Query”, the contents of which are incorporated by referenceherein in their entirety in those jurisdictions allowing forincorporations by reference.

FIELD

The present technology relates to methods of and systems for displayinga plurality of user-selectable refinements to a search query.

BACKGROUND

The Internet has become a popular resource for seeking various types ofinformation including news, entertainment, maps, retail productinformation, and academic research. However, the sheer breadth ofinformation available on the Internet can make it challenging to find aspecific resource among the estimated tens of billions of web pages inexistence today. In order to find particular resources of interest,users generally submit search queries to a search engine via its userinterface. There are currently several search engines continuallyupdating their respective indexes of resources available on theInternet. A user seeking particular Internet resources may submit to asearch engine a search query including search terms that are related tothe Internet resources sought. The search engine analyzes the searchquery and responds with a listing of links to Internet resources bearinga relation to the search query. The user generally enters the searchterms via a text entry form, known as a search bar, which is eitherdisplayed on the search engine's web interface or embedded in the user'sweb browser, and the search results are generally displayed to the useron a search engine results page (SERP).

SUMMARY

When a user submits a vague search query to a search engine, the rangeof corresponding search results tends to be quite broad. In someinstances, the search engine may possess information enabling it tosuggest refinements to the search query first submitted by the user,each leading to a refined search query potentially yielding searchresults of greater interest to the user than those which resulted fromthe first search query. For example, the search engine may possessinformation regarding related search queries having been submittedeither by the user, another user, or an aggregation of users, along withinformation regarding user satisfaction with the results of thecorresponding search queries.

It is thus an object of the present technology to ameliorate at leastsome of the inconveniences present in the prior art and to provideimproved searching.

The present technology provides a method of displaying, along with firstsearch results in respect of a first search query, suggested refinementsto the first search query, each corresponding to a refined search queryincluding the terms of the first search query and at least oneadditional term. Each suggested search query refinement, when selectedby the user, causes refined search results to be displayed. For example,a user who submits the search query “Jennifer Lopez” may be primarilyinterested in Jennifer Lopez's music, photos of her, movies in which shestarred, fashion commentary, news about her personal life, or some othertype of information related to Jennifer Lopez. In such cases, it wouldbe convenient for the user to be able to quickly select among theseclusters of search results. Moreover, in circumstances in which the useris not aware of the various clusters of search results relating to hisor her initial search query, the present technology enables a searchengine to highlight the existence of such clusters to the user and tooffer the user an opportunity to target his or her search to clusterspreviously unknown to him or her.

The present technology allows the search engine to suggest to the userfor each cluster of search results a corresponding search queryrefinement, each suggested search query refinement (SSQR) consisting ofone or more search terms which can be added to the search terms includedin the user's first search query to form a refined search querytargeting one of the clusters of search results. By selecting one of theSSQRs, the user may refine his or her original search and obtain searchresults which correspond more specifically to his or her interests. Thepresent technology thus provides a means of increasing the relevance ofsearch results displayed to the user.

In some implementations described herein, selecting an SSQR triggers arefined search to be effected using a search query containing all thesearch terms of the first search query plus one or more search term(s)corresponding to the SSQR. In other implementations, the results ofrefined searches related to the SSQRs are provided along with the firstsearch results without having been specifically requested, and selectingan SSQR simply causes the related refined search results that havealready been obtained to be displayed.

In contrast with conventional approaches wherein a search enginesuggests refinements to search queries by proposing additional searchterms before any search is performed, the present technology suggestssearch query refinements after a first search has been performed anddisplays them along with the results of that first search, allowing auser to quickly perform a broad first search and to decide only laterwhether or not to refine the search, with the benefit of having alreadyobtained first search results upon which to evaluate whether furtherrefinement is necessary. Moreover, because the search engine hasinformation to which a user may not have access, such as informationabout different categories of Internet resources and statisticalinformation regarding past searches, in many cases it is better placedthan the user to determine the best manner in which to refine a searchquery. Thus, the search engine may propose search query refinementscorresponding to more effective search queries than those a user wouldhave devised on his or her own, especially in cases where the user isunaware or only vaguely aware of the various categories of Internetresources related to the first search query, only some of which may beof particular interest to him or her. Accordingly, the presenttechnology allows a user to employ an interactive search strategywhereby a relatively broad first query is entered and then progressivelyrefined with the help of informed feedback from the search engine.

Further, while some conventional approaches suggest search queryrefinements by displaying additional potential search terms in thesearch bar as first search terms are being entered, the presenttechnology allows a user to select suggested search query refinementsvia one or more graphical objects. Moreover, in some implementations avisual representation of the refinement relationship between the firstsearch query and subsequent refined search queries derived from thefirst search query is displayed, allowing the user to intuitivelynavigate through a universe of related search queries and searchresults.

In various implementations described herein, the SSQRs appear asuser-selectable buttons on the search engine results page (SERP). Byselecting any of these buttons, the user indicates his or her desire tohave the SSQR applied to the first search query to refine the firstsearch. In a further implementation, when a second button is clickedafter a first button had been clicked, an indication that the firstbutton was previously clicked is displayed. The present technology thusenables a user to quickly observe his or her search history and tonavigate intuitively within a universe of search results and refinedsearch results related to the first search query.

In one aspect, some implementations of the present technology provide amethod of displaying by a client application running on at least onedigital electronic device in communication with a search engine aplurality of user-selectable refinements to a first search queryincluding at least one first search term, the method comprising:

-   -   sending by the client application to the search engine the first        search query;    -   receiving by the client application from the search engine first        search results in respect of the first search query and first        suggested search query refinements having been determined by the        search engine based at least in part on an analysis of groups of        related search queries being related to the first search query,        each of the first suggested search query refinements        corresponding to a refined search query including the at least        one first search term and at least one additional search term;    -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object;    -   receiving by the client application from a user via the at least        one first graphical object a first selection of one of the first        suggested search query refinements, the first selection        corresponding to a first refined search query including the at        least one first search term and at least one first additional        search term;    -   receiving by the client application from the search engine first        refined search results in respect of the first refined search        query; and    -   displaying by the client application at least one first refined        search result and a visual representation of a refinement        relationship between the first search query and the first        refined search query.

In some implementations, after receiving the first selection from theuser, the client application sends to the search engine a request toobtain the first refined search results. Such a request may consist ofany information allowing the search engine to recognize that the clientapplication is requesting search results in respect of the first refinedsearch query, and may or may not include the first refined search query.In other implementations, the client receives the first refined searchresults (and possibly other refined search results) from the searchengine without having requested them.

The present technology allows a user to select various suggested searchquery refinements via one or more graphical objects. As those skilled inthe art will understand, there are many types of graphical objects thatcould be displayed to allow a user to make a selection of a suggestedsearch query refinement. In some implementations, the user selects asuggested search query refinement by selecting one of a plurality ofbuttons. Thus, in some implementations:

-   -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object includes displaying by the client application a first        plurality of buttons selectable by a user, each button in the        first plurality of buttons corresponding to one of the first        suggested search query refinements and including text        representative of that suggested search query refinement; and    -   receiving by the client application from a user via the at least        one first graphical object a first selection of one of the first        suggested search query refinements, the first selection        corresponding to a first refined search query including the at        least one first search term and at least one first additional        search term is receiving by the client application from a user a        selection of a button from the first plurality of buttons.

In some further implementations, displaying by the client application atleast one first refined search result and a visual representation of arefinement relationship between the first search query and the firstrefined search query includes displaying a visual indication that thebutton has been selected.

There are many other well-known types of graphical objects via which theuser could make a selection of a suggested search query refinement invarious implementations. The following is a non-exhaustive list:

-   -   a list box, each item in the list corresponding to a suggested        search query refinement;    -   a drop-down list, each item in the list corresponding to a        suggested search query refinement;    -   a plurality of radio buttons, each radio button corresponding to        a suggested search query refinement;    -   an expandable tree, each node in the tree corresponding to a        suggested search query refinement; and    -   a three-dimensional object that can be rotated by the user to        reveal its various faces, each face corresponding to a suggested        search query refinement or a plurality of suggested search query        refinements.

The user may select a suggested search query refinement by appropriatelyinteracting with the graphical object(s) using an input device, forexample by clicking on a button with a mouse, by scrolling through alist box using a keyboard, or by sliding a finger across a touchscreento spin a three-dimensional object and tapping a finger on one of theobject's faces.

In some implementations, the client application further receives from auser via the at least one first graphical object a second selection ofone of the first suggested search query refinements, the secondselection corresponding to a second refined search query including theat least one first search term and at least one second additional searchterm; receives from the search engine second refined search results inrespect of the second refined search query; and displays at least onesecond refined search result and a visual representation of a refinementrelationship between the first search query and the second refinedsearch query. In some further implementations, the client applicationsends to the search engine a request to obtain the first refined searchresults after receiving the first selection from the user and a requestto obtain the second refined search results after receiving the secondselection from the user. Such requests may include the refined searchquery in question or other information allowing the search engine torecognize that the client application is requesting search results inrespect of the refined search query. In other implementations, theclient application receives the first refined search results and thesecond refined search results from the search engine without havingrequested them.

In some implementations, the client application displays, concurrentlywith the visual representation of a refinement relationship between thefirst search query and the second refined search query, a visualindication that the at least one first refined search result wasdisplayed before the at least one second refined search result wasdisplayed. As a non-limiting example, the client application may displaya graphical object or a portion of a graphical object associated withthe first refined search query with a different color, size, or fontthan those of graphical objects or portions of graphical objectsassociated with refined search queries in respect of which refinedsearch results were not displayed before the second refined searchresults were displayed.

In some implementations, the user makes the second selection byselecting a button corresponding to the second refined search query.Thus, in some implementations:

-   -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object includes displaying by the client application a first        plurality of buttons selectable by a user, each button in the        first plurality of buttons corresponding to one of the first        suggested search query refinements and including text        representative of that suggested search query refinement;    -   receiving by the client application from a user via the at least        one first graphical object a first selection of one of the first        suggested search query refinements, the first selection        corresponding to a first refined search query including the at        least one first search term and at least one first additional        search term is receiving by the client application from a user a        selection of a first button from the first plurality of buttons;        and    -   receiving by the client application from a user via the at least        one first graphical object a second selection of one of the        first suggested search query refinements, the second selection        corresponding to a second refined search query including the at        least one first search term and at least one second additional        search term is receiving by the client application from a user a        selection of a second button from the first plurality of        buttons.

In some further implementations, the client application displays avisual indication that the first button has been selected and a visualindication the second button has been selected. Thus, in some furtherimplementations:

-   -   displaying by the client application at least one first refined        search result and a visual representation of a refinement        relationship between the first search query and the first        refined search query includes displaying by the client        application a visual indication that the first button has been        selected; and    -   displaying by the client application at least one second refined        search result and a visual representation of a refinement        relationship between the first search query and the second        refined search query includes displaying by the client        application a visual indication that the second button has been        selected.

In some further implementations, the client application displays,concurrently with the visual indication the second button has beenselected, a visual indication that the first button was selected beforethe second button was selected.

In some further implementations, one or more of another well-known typeof graphical objects may be displayed by the client application, and theuser may make one or more of a first selection and a second selection ofa suggested search query refinement by interacting appropriately withthe one or more graphical objects. Examples of well-known types ofgraphical objects include list boxes, drop-down lists, radio buttons,expandable trees, and three-dimensional objects with multiple faces.

In some implementations, the client application displays secondsuggested search query refinements selectable by the user via one ormore graphical objects in order to further refine the search query. Theresulting further-refined search query includes the search terms of thefirst refined search query as well as additional terms that furtherrefine the search. Thus, in some implementations, the client applicationreceives from the search engine second suggested search queryrefinements, each of the second suggested search query refinementscorresponding to a further-refined search query including the at leastone first search term, the at least one first additional search term,and at least one further additional search term; displays, apart fromthe search bar and apart from the first suggested search queryrefinements, the second suggested search query refinements, the secondsuggested search query refinements being selectable by a user via atleast one second graphical object; receives from a user via the at leastone second graphical object a second selection of one of the secondsuggested search query refinements, the second selection correspondingto a further-refined search query including the at least one firstsearch term, the at least one first additional search term, and at leastone further additional search term; receives from the search enginefurther-refined search results in respect of the further-refined searchquery; and displays at least one further-refined search result and avisual representation of a refinement relationship between the firstsearch query, the first refined search query, and the further-refinedsearch query. In some further implementations, the client applicationsends to the search engine a request to obtain the first refined searchresults after receiving the first selection from the user and a requestto obtain the further-refined search results after receiving the secondselection from the user. Such requests may include the first refinedsearch query or the further-refined search query, as the case may be, orother information allowing the search engine to recognize that theclient application is requesting search results in respect of the firstrefined search query or the further-refined search query. In otherimplementations, the client application receives the first refinedsearch results and the further-refined search results from the searchengine without having requested them.

In some implementations, the client application displays a second set ofbuttons and the user makes the second selection by selecting a buttoncorresponding to the further-refined search query. Thus, in someimplementations:

-   -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object includes displaying by the client application a first        plurality of buttons selectable by a user, each button in the        first plurality of buttons corresponding to one of the first        suggested search query refinements and including text        representative of that suggested search query refinement;    -   receiving by the client application from a user via the at least        one first graphical object a first selection of one of the first        suggested search query refinements, the first selection        corresponding to a first refined search query including the at        least one first search term and at least one first additional        search term is receiving by the client application from a user a        selection of a first button from the first plurality of buttons;    -   displaying by the client application, apart from the search bar        and apart from the first suggested search query refinements, the        second suggested search query refinements, the second suggested        search query refinements being selectable by a user via at least        one second graphical object includes displaying by the client        application, apart from the first plurality of buttons, a second        plurality of buttons selectable by a user, each button in the        second plurality of buttons corresponding to one of the second        suggested search query refinements and including text        representative of that suggested search query refinement; and    -   receiving by the client application from a user via the at least        one second graphical object a second selection of one of the        second suggested search query refinements, the second selection        corresponding to a further-refined search query including the at        least one first search term, the at least one first additional        search term, and at least one further additional search term is        receiving by the client application from a user a selection of a        second button from the second plurality of buttons.

In some further implementations, the client application displays avisual indication that the first button has been selected and a visualindication the second button has been selected. Thus, in someimplementations:

-   -   displaying by the client application at least one first refined        search result and a visual representation of a refinement        relationship between the first search query and the first        refined search query includes displaying by the client        application a visual indication that the first button has been        selected; and    -   displaying by the client application at least one        further-refined search result and a visual representation of a        refinement relationship between the first search query, the        first refined search query, and the further-refined search query        includes displaying by the client application a visual        indication that the second button has been selected.

In some further implementations, one or more of another well-known typeof graphical objects may be displayed by the client application, and theuser may make one or more of a first selection and a second selection ofa suggested search query refinement by interacting appropriately withthe one or more graphical objects. Examples of well-known types ofgraphical objects include list boxes, drop-down lists, radio buttons,expandable trees, and three-dimensional objects with multiple faces.

In some implementations, the client application displays, in the searchbar, the search terms of a tentative refined search query correspondingto a tentative selection of a suggested search query refinement receivedfrom a user. In this manner, the client application provides feedback tothe user allowing him or her to see the search query in respect of whichsearch results would be displayed if he or she were to select aparticular suggested search query refinement. Thus, in someimplementations, the client application receives from a user via the atleast one first graphical object a tentative selection of one of thefirst suggested search query refinements, the tentative selectioncorresponding to a tentative refined search query, the tentative refinedsearch query including the at least one first search term and at leastone tentative additional search term; and displays in the search bar thetentative refined search query.

In some implementations, a user makes the tentative selection by placinga pointer over a button corresponding to that suggested search queryrefinement. As non-limiting examples, the user may use a mouse to move amouse cursor over the button, or touch and hold (without releasing) abutton displayed on a touch-screen using a finger, a stylus, or anotherdevice. Thus, in some implementations:

-   -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object includes displaying by the client application a first        plurality of buttons selectable by a user, each button in the        first plurality of buttons corresponding to one of the first        suggested search query refinements and including text        representative of that suggested search query refinement; and    -   receiving by the client application from a user via the at least        one first graphical object a tentative selection of one of the        first suggested search query refinements, the tentative        selection corresponding to a tentative refined search query, the        tentative refined search query including the at least one first        search term and at least one tentative additional search term is        receiving by the client application an indication that a pointer        controlled by a user is located over a button from the first        plurality of buttons.

In some implementations, one or more of another well-known type ofgraphical objects may be displayed by the client application, and theuser may make a tentative selection of a suggested search queryrefinement by interacting appropriately with the one or more graphicalobjects. Examples of well-known types of graphical objects include listboxes, drop-down lists, radio buttons, expandable trees, andthree-dimensional objects with multiple faces.

In some implementations, the first search query is entered by a user viathe search bar, and the client application displays the first refinedsearch query in the search bar when displaying one or more of the firstrefined search results. In some further implementations, when a usertentatively cancels his or her selection of the first refined suggestedsearch query refinement, the client application displays the firstsearch query in the search bar in order to show the user that acancellation of the first selection would lead the client application todisplay the first search results instead of the first refined searchresults. Thus, in some further implementations, the client applicationreceives from a user via the at least one first graphical object atentative cancellation of the first selection and displays in the searchbar the first search query in lieu of the first refined search query.

In some implementations a user carries out the first selection and thetentative cancellation of the first selection by selecting a button andplacing a pointer over the button, respectively. Thus, in someimplementations:

-   -   displaying by the client application at least one first search        result and, apart from a search bar, the first suggested search        query refinements, the first suggested search query refinements        being selectable by a user via at least one first graphical        object includes displaying by the client application a first        plurality of buttons selectable by a user, each button in the        first plurality of buttons corresponding to one of the first        suggested search query refinements and including text        representative of that suggested search query refinement;    -   receiving by the client application from a user via the at least        one first graphical object a first selection of one of the first        suggested search query refinements, the first selection        corresponding to a first refined search query including the at        least one first search term and at least one first additional        search term is receiving by the client application from a user a        selection of a button from the first plurality of buttons; and    -   receiving by the client application from a user via the at least        one first graphical object a tentative selection of one of the        first suggested search query refinements, the tentative        selection corresponding to a tentative refined search query, the        tentative refined search query including the at least one first        search term and at least one tentative additional search term is        receiving by the client application an indication that a pointer        controlled by a user is located over the button.

In some implementations, one or more of another well-known type ofgraphical objects may be displayed by the client application, and theuser may make one or more of a first selection and a tentative selectionof a suggested search query refinement by interacting appropriately withthose one or more graphical objects. Examples of well-known types ofgraphical objects include list boxes, drop-down lists, radio buttons,expandable trees, and three-dimensional objects with multiple faces.

In some implementations, the client application receives from a user viathe at least one first graphical object a cancellation of the firstselection and displays the at least one first search result in lieu ofthe at least one first refined search result.

It should be noted that some implementations of the present technologydo not require that the client application display all of theinformation received from the search engine, nor do some implementationsrequire that the client application follow any or all instructionsreceived from the search engine. For example, in some implementations ofthe present technology, the client application does not display anygraphical objects corresponding to further suggested search queryrefinements, despite having received from the search engine such furthersuggested search query refinements and instructions to display them.

In some implementations, the analysis of the groups of related searchqueries includes an analysis of past user behaviors of users havingsubmitted the related search queries. In some implementations, theanalysis of the groups of related search queries includes: filtering therelated search queries to only those identified as having providedsearch results which provided a user with information sought by theuser; grouping the filtered related search queries into the groups basedon subsequent user behaviors of the users; and determining a suggestedsearch query refinement for each of at least some of the groups. In somefurther implementations, grouping the filtered related search queriesinto the groups based on subsequent user behaviors of the users includesidentifying common Internet resources having been visited by the usersafter they were provided with search results in response to the filteredrelated search queries.

In another aspect, some implementations of the present technologyprovide a method of providing to a client application running on atleast one digital electronic device in communication with a searchengine a plurality of user-selectable refinements to a first searchquery including at least one first search term, the method comprising:

-   -   receiving by the search engine from the client application the        first search query;    -   effecting by the search engine a first search in respect of the        first search query yielding first search results;    -   determining first suggested search query refinements based at        least in part on an analysis of groups of related search queries        being related to the first search query, each of the first        suggested search query refinements corresponding to a refined        search query including the at least one first search term and at        least one additional search term;    -   sending by the search engine to the client application the first        search results, the first suggested search query refinements,        and instructions for displaying (1) at least one first search        result and (2) apart from a search bar, the first suggested        search query refinements, the first suggested search query        refinements being selectable by a user via at least one first        graphical object;    -   effecting by the search engine a first refined search in respect        of a first refined search query including the at least one first        search term and at least one first additional search term, the        first refined search yielding first refined search results; and    -   sending by the search engine to the client application the first        refined search results and instructions for displaying at least        one first refined search result and a visual representation of a        refinement relationship between the first search query and the        first refined search query.

In some implementations, the search engine receives from the clientapplication a request to obtain the first refined search results aftersending to the client application instructions for displaying the firstsuggested search query refinements. Such a request may consist of anyinformation allowing the search engine to recognize that the clientapplication is requesting search results in respect of the first refinedsearch query, and may or may not include the first refined search query.In other implementations, the search engine sends the first refinedsearch results to the client application without having received arequest to provide them.

The present technology allows a user to select various suggested searchquery refinements via one or more graphical objects. As those skilled inthe art will understand, there are many types of graphical objects thatcould be displayed to allow a user to make a selection of a suggestedsearch query refinement. In some implementations, the user may select asuggested search query refinement by selecting one of a plurality ofbuttons. Thus, in some implementations, sending by the search engine tothe client application the first search results, first suggested searchquery refinements, each of the first suggested search query refinementscorresponding to a refined search query including the at least one firstsearch term and at least one additional search term, and instructionsfor displaying at least one first search result and, apart from a searchbar, the first suggested search query refinements, the first suggestedsearch query refinements being selectable by a user via at least onefirst graphical object includes sending by the search engine to theclient application instructions for displaying a first plurality ofbuttons selectable by a user, each button in the first plurality ofbuttons corresponding to one of the first suggested search queryrefinements and including text representative of that suggested searchquery refinement.

In some further implementations, the instructions sent by the searchengine include instructions to display a visual indication that a buttonwas selected. Thus, in some implementations, sending by the searchengine to the client application the first refined search results andinstructions for displaying at least one first refined search result anda visual representation of a refinement relationship between the firstsearch query and the first refined search query includes sending by thesearch engine to the client application instructions for displaying avisual indication that a button from the first plurality of buttons hasbeen selected.

There are many other well-known types of graphical objects via which theuser could make a selection of a suggested search query refinement invarious implementations. The following is a non-exhaustive list:

-   -   a list box, each item in the list corresponding to a suggested        search query refinement;    -   a drop-down list, each item in the list corresponding to a        suggested search query refinement;    -   a plurality of radio buttons, each radio button corresponding to        a suggested search query refinement;    -   an expandable tree, each node in the tree corresponding to a        suggested search query refinement; and    -   a three-dimensional object that can be rotated by the user to        reveal its various faces, each face corresponding to a suggested        search query refinement or a plurality of suggested search query        refinements.

Thus, in some further implementations, the search engine may send to theclient application instruction for displaying one or more such graphicalobjects, allowing a user to select one or more suggested search queryrefinements by interacting appropriately with those one or moregraphical objects.

In some implementations, the search engine effects a second refinedsearch and provides the corresponding search results to the clientapplication. Thus, in some implementations, the search engine effects asecond refined search in respect of the second refined search queryyielding second refined search results and sends to the clientapplication the second refined search results and instructions fordisplaying at least one second refined search result and a visualrepresentation of a refinement relationship between the first searchquery and the second refined search query. In some furtherimplementations, the search engine receives from the client applicationa request to obtain the first refined search results after sending tothe client application instructions for displaying the first suggestedsearch query refinements and a request to obtain the second refinedsearch results after sending to the client the first refined searchresults. Such requests may include the refined search query in questionor other information allowing the search engine to recognize that theclient application is requesting search results in respect of therefined search query. In other implementations, the search engine sendsthe first refined search results and the second refined search resultsto the client application without having received a specific request toprovide them.

In some implementations, the search engine further sends to the clientapplication instructions for displaying, concurrently with the visualrepresentation of a refinement relationship between the first searchquery and the second refined search query, a visual indication that theat least one first refined search result was displayed before the atleast one second refined search result was displayed. As a non-limitingexample, the client application may be provided with instructions todisplay a graphical object or a portion of a graphical object associatedwith the first refined search query with a different color, size, orfont than those of graphical objects or portions of graphical objectsassociated with refined search queries in respect of which refinedsearch results were not displayed before the second refined searchresults were displayed.

In some implementations, the search engine sends, along with the firstsearch results and the first suggested search query refinements,instructions for displaying buttons selectable by the user to make aselection of a first suggested search query refinement. Thus, in someimplementations, sending by the search engine to the client applicationthe first search results, first suggested search query refinements, eachof the first suggested search query refinements corresponding to arefined search query including the at least one first search term and atleast one additional search term, and instructions for displaying atleast one first search result and, apart from a search bar, the firstsuggested search query refinements, the first suggested search queryrefinements being selectable by a user via at least one first graphicalobject includes sending by the search engine to the client applicationinstructions for displaying a first plurality of buttons selectable by auser, each button in the first plurality of buttons corresponding to oneof the first suggested search query refinements and including textrepresentative of that suggested search query refinement.

In some further implementations, the search engine sends to the clientapplication instructions for displaying visual indications of buttonselections. Thus, in some implementations:

-   -   sending by the search engine to the client application the first        refined search results and instructions for displaying at least        one first refined search result and a visual representation of a        refinement relationship between the first search query and the        first refined search query includes sending by the search engine        to the client application instructions for displaying a visual        indication that a first button from the first plurality of        buttons has been selected; and    -   sending by the search engine to the client application the        second refined search results and instructions for displaying at        least one second refined search result and a visual        representation of a refinement relationship between the first        search query and the second refined search query includes        sending by the search engine to the client application        instructions for displaying a visual indication that a second        button from the first plurality of buttons has been selected.

In some further implementations, the search engine sends to the clientapplication instructions for displaying, concurrently with the visualindication that the second button has been selected, a visual indicationthat the first button was selected before the second button wasselected.

In other further implementations, the search engine may send to theclient application instruction for displaying one or more of anotherwell-known type of graphical objects, allowing a user to select one ormore suggested search query refinements by interacting appropriatelywith those one or more graphical objects. Examples of well-known typesof graphical objects include list boxes, drop-down lists, radio buttons,expandable trees, and three-dimensional objects with multiple faces.

In some implementations, the search engine further sends to the clientapplication instructions for displaying second suggested search queryrefinements selectable by the user via one or more graphical objects inorder to further refine the search query. The resulting further-refinedsearch query includes the search terms of the first refined search queryas well as additional terms that further refine the search. Thus in someimplementations, the search engine further effects a second refinedsearch in respect of the second refined search query yielding secondrefined search results and sends to the client application the secondrefined search results and instructions for displaying at least onesecond refined search result and a visual representation of a refinementrelationship between the first search query and the second refinedsearch query. In some further implementations, the search enginereceives from the client application a request to obtain the firstrefined search results after sending to the client applicationinstructions for displaying the first suggested search query refinementsand a request to obtain the further-refined search results after sendingto the client application instructions for displaying the secondsuggested search query refinements. Such requests may include the firstrefined search query or the further-refined search query, as the casemay be, or other information allowing the search engine to recognizethat the client application is requesting search results in respect ofthe first refined search query or the further-refined search query. Inother implementations, the search engine sends the first refined searchresults and the further-refined search results to the client applicationwithout having received a specific request to provide them.

In some implementations, the search engine sends to the clientapplication instructions for displaying a second set of buttons viawhich the user may make a selection of a further refinement of the firstsearch query by selecting a button corresponding to a further-refinedsearch query. Thus, in some implementations:

-   -   sending by the search engine to the client application the first        search results, first suggested search query refinements, each        of the first suggested search query refinements corresponding to        a refined search query including the at least one first search        term and at least one additional search term, and instructions        for displaying at least one first search result and, apart from        a search bar, the first suggested search query refinements, the        first suggested search query refinements being selectable by a        user via at least one first graphical object includes sending by        the search engine to the client application instructions for        displaying a first plurality of buttons selectable by a user,        each button in the first plurality of buttons corresponding to        one of the first suggested search query refinements and        including text representative of that suggested search query        refinement; and    -   sending by the search engine to the client application second        suggested search query refinements, each of the second suggested        search query refinements corresponding to a further-refined        search query including the at least one first search term, the        at least one first additional search term, and at least one        further additional search term, and instructions for displaying,        apart from the search bar and apart from the first suggested        search query refinements, the second suggested search query        refinements, the second suggested search query refinements being        selectable by a user via at least one second graphical object        includes sending by the search engine to the client application        instructions for displaying, apart from the first plurality of        buttons, a second plurality of buttons selectable by a user,        each button in the second plurality of buttons corresponding to        one of the second suggested search query refinements and        including text representative of that suggested search query        refinement.

In some further implementations, the search engine sends to the clientapplication instructions for displaying a visual indication of thebuttons having been selected. Thus, in some implementations:

-   -   sending by the search engine to the client application the first        refined search results and instructions for displaying at least        one first refined search result and a visual representation of a        refinement relationship between the first search query and the        first refined search query includes sending by the search engine        to the client application instructions for displaying a visual        indication that a button from the first plurality of buttons has        been selected; and    -   sending by the search engine to the client application the        further-refined search results and instructions for displaying        at least one further-refined search result and a visual        representation of a refinement relationship between the first        search query, the first refined search query, and the        further-refined search query includes sending by the search        engine to the client application instructions for displaying a        visual indication that a button from the second plurality of        buttons has been selected.

In other further implementations, the search engine may send to theclient application instruction for displaying one or more of anotherwell-known type of graphical objects, allowing a user to select one ormore suggested search query refinements or further refinements byinteracting appropriately with those one or more graphical objects.Examples of well-known types of graphical objects include list boxes,drop-down lists, radio buttons, expandable trees, and three-dimensionalobjects with multiple faces.

In some implementations, the search engine sends to the clientapplication instructions for displaying, in the search bar, the searchterms of a tentative refined search query corresponding to a tentativeselection of a suggested search query refinement received from a user.This allows the client application to provide feedback to the userallowing him or her to see the search query in respect of which searchresults would be displayed if he or she were to select a particularsuggested search query refinement. Thus, in some implementations,sending by the search engine to the client application the first searchresults, first suggested search query refinements, each of the firstsuggested search query refinements corresponding to a refined searchquery including the at least one first search term and at least oneadditional search term, and instructions for displaying at least onefirst search result and, apart from a search bar, the first suggestedsearch query refinements, the first suggested search query refinementsbeing selectable by a user via at least one first graphical objectincludes sending by the search engine to the client applicationinstructions for displaying in the search bar, upon receiving from auser via the at least one first graphical object a tentative selectionof one of the first suggested search query refinements, a tentativerefined search query corresponding to the tentative selection, thetentative refined search query including the at least one first searchterm and at least one tentative additional search term.

In some implementations, the tentative selection of a suggested searchquery refinement is made when a user places a pointer over acorresponding button. Thus, in some implementations, sending by thesearch engine to the client application the first search results, firstsuggested search query refinements, each of the first suggested searchquery refinements corresponding to a refined search query including theat least one first search term and at least one additional search term,and instructions for displaying at least one first search result and,apart from a search bar, the first suggested search query refinements,the first suggested search query refinements being selectable by a uservia at least one first graphical object includes:

-   -   sending by the search engine to the client application        instructions for displaying a first plurality of buttons        selectable by a user, each button in the first plurality of        buttons corresponding to one of the first suggested search query        refinements and including text representative of that suggested        search query refinement; and    -   sending by the search engine to the client application        instructions for displaying in the search bar, upon receiving an        indication that a pointer controlled by a user is located over a        button from the first plurality of buttons, a tentative refined        search query corresponding to the tentative selection, the        tentative refined search query including the at least one first        search term and at least one tentative additional search term.

In other implementations, the search engine may send to the clientapplication instruction for displaying one or more of another well-knowntype of graphical objects, allowing a user to select or tentativelyselect one or more suggested search query refinements by interactingappropriately with those one or more graphical objects. Examples ofwell-known types of graphical objects include list boxes, drop-downlists, radio buttons, expandable trees, and three-dimensional objectswith multiple faces.

In some implementations, the first search query is entered by a user viathe search bar, and the client application displays the first refinedsearch query in the search bar when displaying one or more of the firstrefined search results. Thus, in some implementations, sending by thesearch engine to the client application the first refined search resultsand instructions for displaying at least one first refined search resultand a visual representation of a refinement relationship between thefirst search query and the first refined search query includes sendingby the search engine to the client application instructions fordisplaying the first refined search query in the search bar. In somefurther implementations, when a user tentatively cancels his or herselection of the first refined suggested search query refinement, theclient application displays the first search query in the search bar inorder to show the user that a cancellation of the first selection wouldlead the client application to display the first search results insteadof the first refined search results. Thus, in some furtherimplementations, sending by the search engine to the client applicationthe first refined search results and instructions for displaying atleast one first refined search result and a visual representation of arefinement relationship between the first search query and the firstrefined search query further includes sending by the search engine tothe client application instructions for displaying in the search bar,upon receiving from a user via the at least one first graphical object atentative cancellation of a selection of a suggested search queryrefinement corresponding to the first refined search query, the firstsearch query in lieu of the first refined search query.

In some implementations a user carries out the first selection and thetentative cancellation of the first selection by selecting a button andplacing a pointer over the button, respectively. Thus, in someimplementations:

-   -   sending by the search engine to the client application the first        search results, first suggested search query refinements, each        of the first suggested search query refinements corresponding to        a refined search query including the at least one first search        term and at least one additional search term, and instructions        for displaying at least one first search result and, apart from        a search bar, the first suggested search query refinements, the        first suggested search query refinements being selectable by a        user via at least one first graphical object includes sending by        the search engine to the client application instructions for        displaying a first plurality of buttons selectable by a user,        each button in the first plurality of buttons corresponding to        one of the first suggested search query refinements and        including text representative of that suggested search query        refinement; and    -   sending by the search engine to the client application the first        refined search results and instructions for displaying at least        one first refined search result and a visual representation of a        refinement relationship between the first search query and the        first refined search query further includes sending by the        search engine to the client application instructions for        displaying in the search bar, upon receiving an indication that        a pointer controlled by a user is located over a button from the        first plurality of buttons corresponding to the first refined        search query, the first search query in lieu of the first        refined search query.

In other implementations, the search engine may send to the clientapplication instruction for displaying one or more of another well-knowntype of graphical objects, allowing a user to tentatively make, make,tentatively cancel, or cancel a selection of one or more suggestedsearch query refinements by interacting appropriately with those one ormore graphical objects. Examples of well-known types of graphicalobjects include list boxes, drop-down lists, radio buttons, expandabletrees, and three-dimensional objects with multiple faces.

In some implementations, the search engine sends to the clientapplication instructions for displaying, upon receiving from a user viathe at least one first graphical object a cancellation of a selection ofa suggested search query refinement corresponding to the first refinedsearch query, the at least one first search result in lieu of the atleast one first refined search result.

In some implementations, selecting a suggested search query refinementin respect of search results yields a filtered subset of those results.Thus, in some implementations, the first refined search results are asubset of the first search results. Likewise, in some implementations,the further-refined search results are a subset of the first refinedsearch results. For example, the search engine could send to the clientapplication, along with the first search results, an organization of thefirst search results into a plurality of groups of search results, eachgroup corresponding to a respective first suggested search queryrefinement. Likewise, the search engine could send, in respect of atleast one of the groups of search results, a plurality of subgroups ofsearch results, each subgroup corresponding to a respectivefurther-refined search query refinement.

In other implementations, the first refined search results are not asubset of the first search results, meaning, for example, that a refinedsearch query “Rafael Nadal Tennis” may yield search results that werenot included among the search results in respect of a first search query“Rafael Nadal”, such as, for example, information relating to othertennis players or to tennis lessons being offered near the user'slocation.

In some implementations, the first search results are from a firstdatabase and the first refined search results are from a second databasebeing different than the first database. As a non-limiting example, thefirst search may be effected using a database of links to web pages andthe first refined search may be effected using a separate databasecontaining only images, or music, or some other type of media.

Likewise, in some implementations, the first refined search results arefrom a first database and the second refined search results are from asecond database being different than the first database. As anon-limiting example, the first refined search may be effected using adatabase containing images and the second refined search may be effectedusing a separate database containing movies.

In some implementations, the SSQRs are static categories of searchresults determined before the search engine receives the first searchquery from the client application. For example, in such implementations,the SSQRs may be determined based on properties of the search results,without regard to information about the first search query, the clientapplication, the device or devices on which the client application isrunning, or the user of the client application.

In some implementations, the first suggested search query refinementsand/or the second suggested search query refinements refer to differenttypes of media. In such implementations, the search engine classifiesInternet resources by type of media (such as movies, watching moviesonline, downloading movies, watching trailers, purchasing movies, music,downloading music, listening to music online, buying songs, pictures,biographies, news, weather, or geography), identifies one or more searchterm(s) representative of each category, and proposes for each categoryan SSQR associated with the search term(s) representative of thecategory.

In other implementations, the search engine determines the SSQRs basedat least in part on information about the first search query. The searchengine analyzes the first search query submitted by the user, determinesa set of previous search queries related to the first search query,analyzes the results of those related queries, groups the results intocategories based on information about the subsequent behavior of usershaving received those results, and determines, for each category, asuggested search query refinement being one or more search term(s) that,when added to the search term(s) of the first search query, wouldindicate to the search engine to provide search results belonging to thecategory. Thus, in some implementations, effecting by the search enginea first refined search in respect of a first refined search queryincluding the at least one first search term and at least one firstadditional search term, the first refined search yielding first refinedsearch results includes:

-   -   determining by the search engine a plurality of groups of search        results, each group of search results including at least one of        the first search results; and    -   determining for each group in the plurality of groups of search        results at least one additional search term which, when added to        the at least one first search term, composes a refined search        query that targets the group.

In some implementations, the search engine determines the SSQRs based atleast in part on information about the client application. Asnon-limiting examples, the SSQRs provided to a client application may bebased at least in part on the type of client application, its languagesettings, its version number, or its historical usage.

In some implementations, the search engine determines the SSQRs based atleast in part on information about the device or devices on which theclient application is running.

In some implementations, the search engine determines the SSQRs based atleast in part on information about the user of the client application.As non-limiting examples, the SSQRs may be based at least in part on theuser's historical usage of the search engine, interaction with SERPs,browsing history, or actual or estimated demographic profile.

In the context of the present specification, a “client application” is acomputer program that is running on appropriate digital electronichardware and is capable of receiving information from a user, sendinginformation to a search engine, receiving information from a searchengine, and displaying information to a user. For example, the clientapplication may run on a smartphone, tablet, laptop, desktop PC, orother device suitable for communicating with a search engine.

In the context of the present specification, a first device should beunderstood to be “in communication with” a second device if each of thedevices is capable of sending information to and receiving informationfrom the other device, across any physical medium or combinations ofphysical media, at any distance, and at any speed. As a non-limitingexample, the search engine and the digital electronic device(s) on whichthe client application is running may communicate over a computernetwork such as the Internet. As another non-limiting example, theclient application may run on the same digital electronic hardware asthe search engine, in which case communication between the clientapplication and the search engine may occur by any means available onsuch digital electronic hardware, such as inter-process communication.

In the present context a “search engine” should be understood tocomprise the software elements or digital electronic devices necessaryto carry out the functions of a search engine system. In variousimplementations of above aspects, the search engine may thus compriseany number of digital electronic devices.

In the context of the present specification, a “search query” isinformation that a search engine takes into account in respect of asearch to be carried out in order to provide the user with theinformation that the user is seeking to obtain through the search. Eachpiece of information is an “element” of the search query. Search queriesmay include a variety of elements, including, but not limited to, one ormore “search terms” (e.g. words, letters, numbers, characters, etc.),the IP address of the client device, the geographic location of theclient device, the (presumed) language of the search term(s), a searchaccount associated with the (presumed) user of the client device, andthe application that the user is using on the client device in respectof the search. Although the user may or may not be aware of the variouselements included within their search query, the inclusion of variouselements helps to provide the user with the information that they areseeking to obtain through the search. In the present context noparticular number or type of elements is generally required, althoughtypically, the more elements provided to the search engine, the betterthe search results.

In the context of the present specification, a “search query refinement”is one or more search terms to be added to a search query in order tocompose a refined search query. The present technology is not restrictedto any particular method of interpreting the search query refinementwith regard to the scope of search results. The search engine mayinterpret the addition of search terms as a narrowing of the search,such that the refined search results include only those results of thefirst search which also include the one or more search terms of thesearch query refinement; or the search engine may interpret the additionof search terms as a broadening of the search, such that the refinedsearch results include both the results of the first search as well asother search results including only the one or more search terms of thesearch query refinement; or the search engine could interpret theaddition of search terms in another way altogether.

It should be understood that not all search elements in respect ofsearch need be sent by the client device to the search engine. Forexample, some elements may be determined by the search engine itself (orby some associated system), be it from the elements sent to the searchengine, or otherwise. Other elements may be stored information retrievedby the search engine, or information derived from stored informationretrieved by the server. In the context of the present specification,the “search results” are the results of a search performed by a searchengine, irrespective of the manner in which those results were obtained.(There are many ways of carrying out a search, and the presenttechnology is not restricted to any particular method.)

In the context of the present specification, a “search bar” is a textbox into which search terms may be entered by a user. A search bar maybe included in a search engine's web interface or as part of a clientapplication's user interface.

In the context of the present specification, it should be understoodthat, while it is generally anticipated that the client applicationinteracts with a “user” being a single person, nothing in the presentspecification should be interpreted to preclude the possibility that theuser with whom the client application interacts could be a differentperson at different times. For example, one person may submit the firstsearch query, and another person, perhaps a friend of the first personsharing the same computer terminal, could select a suggested searchquery refinement having been received from the search engine anddisplayed by the client application. As such, in every instance in whichthe client application either receives instruction from a user ordisplays information to a user, it is properly stated that the clientapplication is interacting with “a user” rather than with some definiteuser with whom a previous interaction took place.

In the context of the present specification, a “visual representation ofa refinement relationship” between a first search query and a secondsearch query is any visual indication conveying to the user that thesecond search query is equivalent to a refined version of the firstsearch query. For example, the refinement relationship could beindicated by displaying the search terms of the second search query inthe search bar, wherein the search terms included in the first searchquery, being a subset of the search terms in the second search query,are displayed using a different color, font, or style. As anotherexample, the refinement relationship could be indicated by displayingthe search terms of the second search query in the search bar and, apartfrom the search bar, a graphical object comprising the search termsincluded in the second search query but not included in the first searchquery.

In the context of the present specification, a “database” is anystructured collection of data, irrespective of its particular structure,the database management software, or the computer hardware on which thedata is stored, implemented or otherwise rendered available for use. Adatabase may reside on the same hardware as the process that stores ormakes use of the information stored in the database or it may reside onseparate hardware, such as a dedicated server or plurality of servers.

In the context of the present specification, the expression“information” includes information of any nature or kind whatsoevercapable of being stored in a database. Thus information includes, but isnot limited to audiovisual works (pictures, movies, sound records,presentations etc.), data (location data, numerical data, etc.), text(opinions, comments, questions, messages, etc.), documents,spreadsheets, etc.

In the context of the present specification, the expression“instructions for displaying” includes any information which may beinterpreted by its recipient as an indication that some content is to bedisplayed, as an indication as to the form in which some content is tobe displayed, or both. As one skilled in the art would recognize, thedegree of precision required in such instructions depends on the extentof any prior understanding about the interpretation to be given toinformation being exchanged as between the sender and the recipient ofthe instructions. For example, if it is understood prior to acommunication between a search engine and a client application that thesearch engine will send to the client application certain information tobe displayed in a particular form, then the mere sending of the contentmay constitute instructions for displaying that content. In the extreme,both the content and the form in which it is to be displayed arepredetermined, in which case the “instructions for displaying” mayconsist merely of an indication that the predetermined content is to bedisplayed according to the predetermined form, without reference eitherto the particular content or to the particular form.

In the context of the present specification, the expression “computerusable information storage medium” is intended to include media of anynature and kind whatsoever, including RAM, ROM, disks (CD-ROMs, DVDs,floppy disks, hard drivers, etc.), USB keys, solid state-drives, tapedrives, etc.

In the context of the present specification, the words “first”,“second”, “third”, etc. have been used as adjectives only for thepurpose of allowing for distinction between the nouns that they modifyfrom one another, and not for the purpose of describing any particularrelationship between those nouns. Thus, for example, it should beunderstood that, the use of the terms “first graphical object” and“third graphical object” is not intended to imply any particular order,type, chronology, hierarchy or ranking (for example) of/between thegraphical objects, nor is their use (by itself) intended imply that any“second graphical object” must necessarily exist in any given situation.Further, as is discussed herein in other contexts, reference to a“first” element and a “second” element does not preclude the twoelements from being the same actual real-world element. Thus, forexample, in some instances, a “first” graphical object and a “second”graphical object may be the same graphical object, and in other casesthey may be different graphical objects.

In the context of the present specification, certain claim elements havebeen labeled with letters “(a)”, “(b)”, “(c)”, etc. These labels havebeen used only for ease of reference to the claim elements to which theyrefer, and not for the purpose of describing any particular relationshipbetween those claim elements. The alphabetical nature of these labels isnot intended to necessarily imply any particular order, chronology,hierarchy or ranking between the claim elements. Thus, for example,depending on the implementation, it may be that a method claim elementwith the label “(h)” may occur before, after, or simultaneously with amethod claim element with the label “(c)”.

In the context of the present specification, the expression “component”is meant to include software (appropriate to a particular hardwarecontext) that is both necessary and sufficient to achieve the specificfunction(s) being referenced.

Implementations of the present technology each have at least one of theabove-mentioned object and/or aspects, but do not necessarily have allof them. It should be understood that some aspects of the presenttechnology that have resulted from attempting to attain theabove-mentioned object may not satisfy this object and/or may satisfyother objects not specifically recited herein.

Additional and/or alternative features, aspects and advantages ofembodiments of the present invention will become apparent from thefollowing description, the accompanying drawings and the appendedclaims.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding of the present technology, as well as otheraspects and further features thereof, reference is made to the followingdescription which is to be used in conjunction with the accompanyingdrawings, where:

FIG. 1 is a context diagram of a computing environment suitable for usewith implementations of the present technology described herein;

FIG. 2 is an example of a client application interface for entering asearch query;

FIG. 3 is an example of a client application interface showing firstsearch results in respect of the search query of FIG. 2 and firstsuggested search query refinements;

FIG. 4 is an example of a client application interface showing atentative selection of a first suggested search query refinement;

FIG. 5 is an example of a client application interface showing anunrealized tentative selection of a first suggested search queryrefinement;

FIG. 6 is an example of a client application interface showing aselection of a first suggested search query refinement corresponding toa first refined search query;

FIG. 7 is an example of a client application interface showing firstrefined search results in respect of the first refined search query ofFIG. 6 and further suggested search query refinements;

FIG. 8 is an example of a client application interface showing aselection of a further suggested search query refinement correspondingto a further-refined search query;

FIG. 9 is an example of a client application interface showingfurther-refined search results in respect of the further-refined searchquery of FIG. 9;

FIG. 10 is an example of a client application interface showing atentative cancellation of the selection of the first suggested searchquery refinement of FIG. 6;

FIG. 11 is an example of a client application interface showing aselection of a second suggested search query refinement corresponding toa second refined search query;

FIG. 12 is an example of a client application interface showing secondrefined search results in respect of the second refined search query ofFIG. 11;

FIG. 13 is a high-level block diagram of a search engine system; and

FIGS. 14A to 14D show a flowchart representing a series of interactionsbetween a client application and a search engine illustrating variousaspects of the present technology.

DETAILED DESCRIPTION

FIG. 1 shows a context diagram of a computing environment 100 suitablefor use with implementations herein. A user 110 employs a smartphone 120in communication with a search engine 140 via the Internet 130. Thesmartphone 120 has a keyboard 124 to receive text input from user 110and a display 122 for rendering a browser interface 200 as describedbelow with reference to FIG. 2. The search engine 140 performs some ofthe following tasks: indexes the web, keeps a database of indexed webpages, receives search queries, performs web searches, categorizessearch results into different categories, categorizes search queries andmatches them with the categories of search results, etc.

It is to be expressly understood that smartphone 120 and search engine140 are merely implementations of the present technology. Thus, thedescriptions thereof that follow are intended to be only illustrativeexamples of the present technology. These descriptions are not intendedto define the scope or set forth the bounds of the present technology.In some cases, what are believed to be helpful examples of modificationsto smartphone 120 and search engine 140 may also be set forth below.This is done merely as an aid to understanding, and, again, not todefine the scope or set forth the bounds of the present technology.These modifications are not an exhaustive list, and, as a person skilledin the art would understand, other modifications are likely possible.Further, where this has not been done (i.e. where no examples ofmodifications have been set forth), it should not be interpreted that nomodifications are possible and/or that what is described is the solemanner of implementing that element of the present technology. As aperson skilled in the art would understand, this is likely not the case.

FIGS. 2 to 12 serve to illustrate a continuous series of transactionsbetween user 110 and browser 200 being a client application running onsmartphone 120. As one skilled in the art will understand, thisparticular series of transactions is merely illustrative of the behaviorof a particular implementation of the present technology. A wide varietyof other implementations could be implemented based on the descriptionof the technology disclosed herein.

Beginning with FIG. 2, an implementation of a browser 200 is shown as itmay appear on the display 122 of smartphone 120 (shown in FIG. 1). Thebrowser 200 has a search bar 210 into which user 110 enters a searchquery 212 (e.g. “Jennifer Lopez”) by typing on keyboard 124. The user110 submits the search query 212 by clicking on a search button 211using cursor 213 or by entering a keystroke such as the “Enter” key viakeyboard 124. The browser 200 receives the search query 212 and thesmartphone 120 sends it to the search engine 140 via the Internet 130.The search engine 140 effects a search yielding search results 230 (FIG.3) and generates first suggested search query refinements and sends themto browser 200 running on smartphone 120. Optionally, in someimplementations, at this time search engine 140 may also effect one ormore additional searches yielding refined search results (such as therefined search results 250 and 270 of FIG. 7 and FIG. 12, respectively)in respect of refined search queries corresponding to the suggestedsearch query refinements and send those refined search results tobrowser 200 along with search results 230. Optionally, in someimplementations, at this time search engine 140 may also generatefurther suggested search query refinements (such as the furthersuggested search query refinements associated with the furtherrefinement buttons 240 of FIG. 7) and effect additional searchesyielding further-refined search results (such as the further-refinedsearch results 260 of FIG. 9) in respect of the further-refined searchqueries corresponding to those further suggested search queryrefinements; and send the further-refined search results and the furthersuggested search query refinements to browser 200.

FIG. 3 shows search results 230 and suggested search query refinements220 being displayed by browser 200. By interacting with browser 200, atthis point user 110 could select one of the search results 230, enter anew search query in the search bar 210, or select one of the suggestedsearch query refinements 220. The search results 230 in this exemplaryimplementation are a combination of links to web pages and images, butin various other implementations they could comprise any other type ofsearch result.

FIG. 4 shows a tentative selection of a suggested search queryrefinement, which user 110 makes by placing cursor 213 over refinementbutton 222. The tentative refined search query 214 appears in search bar210, composed of the search terms of the original search query 212 plusthe search terms of the tentatively selected suggested search queryrefinement (“Photo Picture Image”) corresponding to refinement button222. User 110 thus receives a visual indication of the search query inrespect of which search results would be displayed if he or she were torealize the selection of refinement button 222. In the implementationshown, the tentative additional search terms are displayed in italics todistinguish them from the search terms of the original search query 212.Note that refinement button 222 includes text (“Photo”) representativeof the corresponding SSQR (“Photo Picture Image”), without necessarilyincluding all of its search terms.

FIG. 5 shows the state of browser 200 after user 110 has not realizedselection of refinement button 222. After tentatively selectingrefinement button 222 by placing cursor 213 over refinement button 222as depicted in FIG. 4, user 110 has decided not to select refinementbutton 222 and has instead moved cursor 213 away from refinement button222. Browser 200 provides feedback of the non-selection of refinementbutton 222 to the user by displaying anew search query 212 in search bar210 in lieu of tentative refined search query 214.

FIG. 6 shows a selection of a suggested search query refinement, whichuser 110 makes by clicking on refinement button 221 (“Music”). In thisimplementation, the refined search query 216 (“Jennifer Lopez Music”)corresponding to refinement button 221 is displayed in search bar 210prior to the mouse click on refinement button 221, since the mouse beingpositioned over further refinement button 221 is a tentative selectionanalogous to the tentative selection of refinement button 222 describedabove with reference to FIG. 4. In other implementations that do notinclude the displaying of tentative refined search queries in the searchbar, refined search query 216 may be displayed in search bar 210 onlyafter refinement button 221 has been selected, or refined search query216 may not be displayed in search bar 210 at all.

In some implementations of the present technology, after receiving theselection of refinement button 221, browser 200 sends to search engine140 a request to obtain refined search results 250 in respect of refinedsearch query 216 (“Jennifer Lopez Music”) (FIG. 7). In otherimplementations, browser 200 may have already obtained refined searchresults 250 from browser 200 in response to the original search query212, as described above with reference to FIG. 2.

In this exemplary implementation, further suggested search queryrefinements are also received from search engine 140 by browser 200along with the refined search results 250. In other implementations, nofurther suggested search query refinements are provided by search engine140.

FIG. 7 shows refined search results 250 being displayed by browser 200.Along with search results 250, browser 200 also displays many otherelements to assist user 110 to navigate through the universe of searchresults related to the original search query 212 (“Jennifer Lopez”) andthe refined search query 216 (“Jennifer Lopez Music”). A visualindication of a refinement relationship between the original searchquery 212 and the refined search query 216 is displayed by virtue of thesearch terms of refined search query 216 being displayed in search bar210 along with a visual indication that refinement button 221 (“Music”),corresponding to the suggested search query refinement that was appliedto search query 212, has been selected. In the present implementation,the selection of refinement button 221 is indicated by thickening itsborder and bolding its text label; however, any other visual indicationof the prior selection of refinement button 221 could be employed. User110 may thus visually apprehend the impact of the selection ofrefinement button 221 on the search query. In addition to the visualrepresentation of user 110's search query refinement history, FIG. 7also shows the displaying by browser 200 of further suggested searchquery refinements selectable by user 110 via the further refinementbuttons 240.

FIG. 8 shows a selection of a further suggested search query refinement,which user 110 makes by clicking on further refinement button 242(“Stream”). In this implementation, the further-refined search query 218(“Jennifer Lopez Music Stream”) corresponding to further refinementbutton 242 is displayed in search bar 210 prior to the mouse click onfurther refinement button 242, since the mouse being positioned overfurther refinement button 242 is a tentative selection analogous to thetentative selection of refinement button 222 described above withreference to FIG. 4. In other implementations that do not include thedisplaying of tentative refined search queries in the search bar,further-refined search query 218 may be displayed in search bar 210 onlyafter further refinement button 242 has been selected, orfurther-refined search query 218 may not be displayed in search bar 210at all.

In some implementations of the present technology, after receiving theselection of further refinement button 242, browser 200 sends to searchengine 140 a request to obtain further-refined search results 260 inrespect of further-refined search query 218 (FIG. 9). In otherimplementations, browser 200 may have already obtained further-refinedsearch results 260 from browser 200 in response to the original searchquery 212, as described above with reference to FIG. 2. In thisexemplary implementation, no yet further suggested search queryrefinements (that is, suggested refinements of the further-refinedsearch query) are provided by search engine 140; however, in variousimplementations, any number of additional degrees of refinement could besuggested by the search engine 140.

FIG. 9 shows further-refined search results 260 being displayed bybrowser 200. Along with search results 260, browser 200 also displays avisual indication of a refinement relationship between the originalsearch query 212, the refined search query 216, and the further-refinedsearch query 218 by displaying the search terms of further-refinedsearch query 218 in search bar 210 along with visual indications of thatrefinement button 221 and further refinement button 242 have beenselected. User 110 may thus visually apprehend his or her search queryrefinement history. In this exemplary implementation, no furthersuggested search query refinements are proposed to user 110 beyond thefirst two levels; in other implementations, a third (and fourth, and soon) level of suggested search query refinements may be presented to theuser to allow for yet further refinement of the further-refined searchquery 218 “Jennifer Lopez Music Stream”.

FIG. 10 shows a tentative cancellation of the suggested search queryrefinement previously selected by user 110 via refinement button 221(“Music”), and the tentative cancellation by extension of the furthersuggested search query refinement selected by user via 100 via button242 (“Stream”). In this exemplary implementation, a visual indication ofthe impact on the search query of realizing the cancellation isdisplayed in search bar 210 by striking out the search terms (“MusicStream”) which are included in further-refined search query 218(“Jennifer Lopez Music Stream”) but not included in the search querythat would result from the cancellation, i.e. the original search query212 (“Jennifer Lopez”). In other implementations, the effect of thecancellation could be displayed in another manner, such as by removingthe additional search terms (“Music Stream”) entirely rather thanstriking them out.

FIG. 11 shows a selection of an alternative suggested search queryrefinement of original search query 212 corresponding to refined searchquery 219 (“Jennifer Lopez Fashion Dress”), which user 110 makes byclicking on refinement button 225 (“Fashion”). In this implementation,the refined search query 219 (“Jennifer Lopez Fashion Dress”)corresponding to refinement button 225 is displayed in search bar 210prior to the mouse click on refinement button 225, since the mouse beingpositioned over refinement button 225 is a tentative selection analogousto the tentative selection of refinement button 222 described above withreference to FIG. 4. In other implementations that do not include thedisplaying of tentative refined search queries in the search bar,refined search query 219 may be displayed in search bar 210 only afterrefinement button 225 has been selected, or refined search query 219 maynot be displayed in search bar 210 at all.

In some implementations of the present technology, after receiving theselection of refinement button 225, browser 200 sends to search engine140 a request to obtain refined search results 270 (FIG. 12) in respectof refined search query 219 (“Jennifer Lopez Fashion Dress”). In otherimplementations, browser 200 may have already obtained refined searchresults 270 from browser 200 in response to the original search query212, as described above with reference to FIG. 2.

In this exemplary implementation, no further suggested search queryrefinements are received from search engine 140 by browser 200 alongwith the refined search results 270. In other implementations, furthersuggested search query refinements are provided by search engine 140.

FIG. 12 shows refined search results 270 being displayed by browser 200.Along with search results 270, browser 200 also displays a visualrepresentation of a refinement relationship between the original searchquery 212 and the refined search query 219 by displaying the searchterms of refined search query 219 in search bar 210 along with a visualindication that refinement button 225 (“Fashion”) has been selected, theselection of refinement button 225 operative to apply the correspondingsuggested search query refinement to search query 212 so as to formrefined search query 219. In the present implementation, the selectionof refinement button 225 is indicated by thickening its border andbolding its text label, and a visual indication that refinement button221 (“Music”) was previously selected is indicated by displaying itstext label in italics. The latter visual indication allows user 110 toquickly recognize that refined search results 250 in respect of refinedsearch query 216 (“Jennifer Lopez Music”) were displayed before searchresults 270 in respect of refined search query 219 (“Jennifer LopezFashion Dress”) were displayed. In this exemplary implementation, thereare no further refinement buttons to be displayed as no furthersuggested search query refinements in respect of refined search query219 were received by browser 200 from search engine 140.

FIG. 13 is a block diagram of the search engine 140 in the environmentof FIG. 1. The search engine 140 includes a search component 142, whichincludes a database 144 to store information about the search querybeing performed at a given time. Search component 142 is incommunication with a search quality component 146 which maintains adatabase 148 for storing information used in the identification ofsuggested search query refinements related to the search query such asinformation about past search queries.

Each of search component 142, database 144, search quality component146, and database 148 may be implemented wholly or in part in softwarehosted on any number of digital electronic devices, and wholly or inpart in digital electronic circuitry, and may be composed of numeroushardware devices, including servers, wires, processors, etc., as well assoftware. In a typical implementation, search component 142 is eitherco-hosted with database 144 on a single computer or cluster ofcomputers, or each is hosted on a separate computer or cluster ofcomputers that is connected to the other via a low-latency network link.Search quality component 146 and database 148 are typically similarlyconnected so as to improve performance by reducing latency, as aresearch component 142 and search quality component 146.

Search component 142 performs the core search functions in respect of asearch query, which may include receiving the search query, analyzingthe search query, decomposing the query into search terms, identifyingkey search terms, and identifying marker terms (see below for moredetails). Search component 142 may also index Internet resources, storethe index and associated data, search the index, group Internetresources into clusters, determine if a search query is targeting acluster of Internet resources, and return a listing of relevant Internetresources to a user. Some of these functions of search component 142 areperformed online and others are performed offline.

Search quality component 146 maintains an archive of information aboutpast search queries in database 148, possibly including search terms,search results, statistics about user interactions with the searchresults such as the frequency with which each result was selected by theuser after each search query, and statistics regarding related searchterms such as the frequency with which various combinations of searchterms appeared together. Search quality component 146 regularly receivesupdates from search component 142. The updates may contain informationsuch as search terms included in search queries and the interactions ofusers with the SERPs returned by search engine 140 (i.e. links clickedamong the search results, subsequent search queries).

FIGS. 14A to 14D describe a series of steps performed by a clientapplication implemented as browser 200 and a search engine 140. FIGS.14B, 14C, and 14D are a continuation of FIG. 14A.

At step 1402, smartphone 120 displays browser 200 on its display 122. Atstep 1404, browser 200 receives first search query 212 including firstsearch terms typed by user 110 into search bar 210 of smartphone 120 viakeyboard 124. At step 1406, browser 200 sends first search query 212 tosearch engine 140.

At step 1408, search engine 140 receives first search query 212 frombrowser 200. At step 1410, search engine 140 analyzes first search query212 to determine first suggested search query refinements (described inmore detail below) and effects a first search in respect of first searchquery 212 yielding first search results 230. At step 1412, search engine140 sends to browser 200 the first search results 230, the firstsuggested search query refinements, and instructions for displaying thefirst search results 230 and refinement buttons 220 corresponding to thefirst suggested search query refinements. In some implementations, theinstructions for displaying the refinement buttons 220 includeinstructions for displaying a visual indication that a button has beenselected upon being selected by user 110. In some implementations, theinstructions include instructions for displaying a visual representationof a refinement relationship between first search query 212 and therespective refined search queries corresponding to the refinementbuttons 220.

At step 1414, browser 200 receives the first search results 230, thefirst SSQRs, and the instructions for displaying the first searchresults 230 and the refinement buttons 220. At step 1416, browser 200displays at least one of the first search results 230 and the refinementbuttons 220. At step 1418, browser 200 receives a tentative selection ofone of the first SSQRs when user 110 places a mouse cursor 213 overrefinement button 222. At step 1420, browser 200 displays a tentativerefined search query 214 corresponding to refinement button 222 insearch bar 210. At step 1422, browser 200 receives a selection of one ofthe first SSQRs when user 110 clicks on refinement button 221corresponding to refined search query 216. At step 1424, browser 200sends refined search query 216 to search engine 140 in a request toobtain refined search results 250.

At step 1426, search engine 140 receives refined search query 216 in arequest to obtain search results 250. At step 1428, search engine 140analyzes refined search query 216 to determine further SSQRs (asdescribed below) and effects a first refined search in respect ofrefined search query 216 yielding refined search results 250. At step1430, search engine 140 sends to browser 200 the refined search results250, the further SSQRs, and instructions for displaying the refinedsearch results 250 and further refinement buttons 240 corresponding tothe further SSQRs. In some implementations, the instructions fordisplaying the further refinement buttons 240 include instructions fordisplaying a visual indication that a button has been selected uponbeing selected by user 110. In some implementations, the instructionsinclude instructions for displaying a visual representation of arefinement relationship between first search query 212 and refinedsearch query 216. In some implementations, the instructions includeinstructions for displaying a visual representation of a refinementrelationship between first search query 212, refined search query 216,and the respective further-refined search queries corresponding to thefurther-refinement buttons 240.

At step 1432, browser 200 receives from search engine 140 the refinedsearch results 250, the further SSQRs, and instructions for displayingthe refined search results 250 and the further refinement buttons 240.At step 1434, browser 200 displays a clicked representation of button221 and, in search bar 210, the refined search query 216 correspondingto button 221. This serves as a visual representation of a refinementrelationship between first search query 212 and refined search query216. At step 1436, browser 200 displays at least one of the refinedsearch results 250 and the further refinement buttons 240 correspondingto the further SSQRs. At step 1438, browser 200 receives a selection ofa further SSQR when user 110 clicks on further refinement button 242corresponding to further-refined search query 218. At step 1440, browser200 sends further-refined search query 218 to search engine 140 in arequest to obtain further-refined search results 260.

At step 1442, search engine 140 receives further-refined search query218 in a request to obtain search results 260. At step 1444, searchengine 140 analyzes further-refined search query 218 and effects afurther-refined search in respect of further-refined search query 218yielding further-refined search results 260. At step 1446, search engine140 sends to browser 200 the further-refined search results 260 andinstructions for displaying the further-refined search results 260. Insome implementations, the instructions include instructions fordisplaying a visual representation of a refinement relationship betweenfirst search query 212, refined search query 216, and further-refinedsearch query 218.

At step 1448, browser 200 receives from search engine 140 thefurther-refined search results 260 and instructions for displaying thefurther-refined search results 260. At step 1450, browser 200 displaysclicked representation of button 221, a clicked representation of button242 and, in search bar 210, the further-refined search query 218corresponding to button 242. This serves as a visual representation of arefinement relationship between first search query 212, refined searchquery 216, and further-refined search query 218. At step 1452, browser200 displays at least one of the further-refined search results 260. Atstep 1454, browser 200 receives a tentative cancellation of the firstSSQR when user places cursor 213 over refinement button 221. At step1456, browser 200 displays in search bar 210 the first search query 212and an indication of the tentatively cancelled search terms. At step1458, browser 200 receives a selection of a second, alternative SSQRwhen user 110 clicks on refinement button 225 corresponding to refinedsearch query 219. At step 1460, browser 200 sends refined search query219 to search engine 140 in a request to obtain refined search results270.

At step 1462, search engine 140 receives refined search query 219 in arequest to obtain search results 270. At step 1464, search engine 140analyzes refined search query 219 and effects a refined search inrespect of refined search query 219 yielding refined search results 270.At step 1466, search engine 140 sends to browser 200 the refined searchresults 270 and instructions for displaying the refined search results270. In some implementations, the instructions include instructions fordisplaying a visual representation of a refinement relationship betweenfirst search query 212 and refined search query 219. In someimplementations, the instructions include instructions for displaying avisual indication that refinement button 221 was selected beforerefinement button 225 was selected.

At step 1468, browser 200 receives from search engine 140 the refinedsearch results 270 and instructions for displaying the refined searchresults 270. At step 1470, browser 200 displays a clicked representationof button 225 and, in search bar 210, the refined search query 219corresponding to button 225. This serves as a visual representation of arefinement relationship between first search query 212 and refinedsearch query 219. In some implementations, browser 200 also displays avisual indication that refinement button 221 was previously selected. Atstep 1472, browser 200 displays at least one of the refined searchresults 270.

It should be noted that the particular set of steps depicted in FIG. 14is meant to describe a potential interaction of a user with oneimplementation of the present technology. In other implementations andother interactions, some steps may be omitted and others may be added.In particular, in some implementations of the present technology, steps1424, 1440, and 1460 are not performed by the client application, andsteps 1426, 1442, and 1462 are not performed by the search engine.Instead, in such an alternative implementation, an additional step maybe introduced, possibly after step 1410, wherein search engine 140effects a plurality of refined searches in respect of each of therefined search queries formed by application of the first suggestedsearch query refinements to the first search, each refined searchyielding refined search results which are sent by search engine 140 tothe client application without the client application having sent arequest for those refined search results, contrary to the implementationdescribed in FIG. 14. Likewise, search engine 140 may effectfurther-refined searches in respect of each of the further SSQRs inrespect of each of the refined search queries, each further-refinedsearch query yielding further-refined search results, and send thosefurther-refined search results to the client application without theclient application having sent a request for those further-refinedsearch results.

Suggested search query refinements are generated by the search enginebased on various types of information. In some instances SSQRs may bestatic categories of search results determined based on properties ofthe search results contained in the search component 142's search index.For example, the SSQRs may refer to different types of media. However,in other instances, the search engine may determine the SSQRsdynamically on the basis of information about the search query. Anexample of the determination of suggested search query refinementsfollows in respect of the search query “hobbit”.

Client application 200 sends the search query 212 (“hobbit”) to searchcomponent 142 of search engine 140.

Search component 142 performs a lexical and semantic analysis of searchquery 212. For example, key search terms of the search query areidentified, particularly those carrying quantifiably measurable semanticmeaning, as well as “marker terms” which carry an inherent indication ofa cluster of search results of a particular type (e.g. “book”, “film”,“movie”, “game”, “store”, etc.). If the first search query contains suchmarker terms, there is no need to generate suggested search queryrefinements: the marker terms already identify the cluster of searchresults of interest.

However, if insufficient marker terms are present, suggested searchquery refinements need to be determined. Search component 142 askssearch quality component 146 for search queries related to the searchquery 212 (e.g. “hobbit”). Search quality component 146 responds withthe following types of related queries:

-   -   Search queries containing the same search terms as search query        212 (“hobbit”), for example “hobbit the book”, “watch online        movies about hobbits”, “what does hobbit mean”, etc.    -   Search queries which have been submitted to the search engine        shortly after previous search queries equal to or related to        search query 212. With regard to our example, these would be        search queries that users submitted after searching for “hobbit”        or searches related to “hobbit”. For example, if either user 100        or another user previously searched for “hobbit” and thereafter        entered another search query such as “lord of the rings”, the        query “lord of the rings” would therefore be considered a        related search query with respect to the query “hobbit”.

Along with the related search queries, search quality component 146 alsoprovides search result statistics for each of the related search queriesto search component 142.

Next search component 142 determines groups of search queries related tothe search query “hobbit”. The groups are determined by search component142 based on a statistical estimate of the user's likely interests inthe following manner.

First, search component 142 filters the related search queries to only“meaningful” search queries, being those identified as having providedthe user with the information he or she sought, based on an analysis ofthe user's clicking behavior while browsing the SERP. This analysis mayentail a detailed probability analysis based on a variety of factorsincluding the number of links the user clicked on the SERP, the amountof time the user spent reading each link, the number of subsequentsearch queries, the number of related search queries, and other factors.This analysis may also apply known techniques in the realm of searchresult ranking.

Second, search component 142 groups the meaningful queries based on pastuser behaviors. In particular, if users having submitted differentmeaningful search queries later visited one or more links in common,these meaningful search queries are considered to be related to eachother based on user behavior. For example, imagine that search component142 has determined that the following search queries related to searchquery 212 (“hobbit”) are meaningful search queries:

-   -   “lord of the rings movie”    -   “popular books today”    -   “best costumes for Halloween”    -   “hobbit the movie”    -   “download torrent hobbit”    -   “buy hobbit stuff”

Search component 142 analyzes the statistical data provided by searchquality component 146 and observes that users who submitted these searchqueries subsequently clicked on the following links:

“lord of the rings movie” links 1, 2, 3 “popular books today” links 7,8, 9 “costumes for Halloween” links 10, 11, 12 “hobbit the movie” links1, 2, 5, 6 “download torrent hobbit” links 3, 6 “buy hobbit stuff” links10, 11

Given the above results, search component 142 groups the search queriesas follows:

Group 1: “lord of the rings movie” links 1, 2, 3 “hobbit the movie”links 1, 2, 5, 6 “download torrent hobbit” links 3, 6 Group 2: “costumesfor Halloween” links 10, 11, 12 “buy hobbit stuff” links 10, 11 Group 3:“popular books today” links 7, 8, 9

Third, search component 142 determines the popularity of each groupbased on the cumulative popularity of the meaningful queries within eachgroup. In other words, search component 142 calculates the total numberof times users have submitted search queries belonging to each group,and the group with the most submitted search queries is deemed to be themost popular. Search component 142 then selects the most popular groups.

Fourth, within each group, search component 142 ranks the search queriesby popularity. Let's imagine that in Group 1, the most popular queriesare (1) “hobbit the movie”, (2) “download torrent hobbit”, and (3) “lordof the rings movie”

Finally, search component 142 determines the suggested search queryrefinement for each group by cropping the search terms of the initialsearch query 212 (i.e. “hobbit”) from the most popular search query inthe group, as well as any other irrelevant search terms (e.g. “the”,“a”, etc.). Thus, for group 1, “hobbit the movie” is cropped to “movie”and becomes the suggested search query refinement in respect of Group 1,causing the search term “movie” to be appended to search query 212“hobbit” if selected (i.e. composing the refined search query “hobbitmovie”). In some cases, cropping the most popular query in a group mayresult in a cropped search query consisting of more than one searchterm. In such cases, search component 142 may, in some implementations,perform an additional step, analyzing the remaining uncropped searchquery terms and determining which is most unique as compared with theother suggested search query refinements already identified. In otherimplementations, suggested search query refinements may include morethan one search term.

Modifications and improvements to the above-described embodiments of thepresent invention may become apparent to those skilled in the art. Theforegoing description is intended to be exemplary rather than limiting.The scope of the present invention is therefore intended to be limitedsolely by the scope of the appended claims.

1. A method of displaying by a client application running on at leastone digital electronic device in communication with a search engine aplurality of user-selectable refinements to a first search queryincluding at least one first search term, the method comprising: (a)sending by the client application to the search engine the first searchquery; (b) receiving by the client application from the search enginefirst search results in respect of the first search query and firstsuggested search query refinements having been determined by the searchengine based at least in part on an analysis of groups of related searchqueries being related to the first search query, each of the firstsuggested search query refinements corresponding to a refined searchquery including the at least one first search term and at least oneadditional search term; (c) displaying by the client application atleast one first search result and, apart from a search bar, the firstsuggested search query refinements, the first suggested search queryrefinements being selectable by a user via at least one first graphicalobject; (d) receiving by the client application from a user via the atleast one first graphical object a first selection of one of the firstsuggested search query refinements, the first selection corresponding toa first refined search query including the at least one first searchterm and at least one first additional search term; (e) receiving by theclient application from the search engine first refined search resultsin respect of the first refined search query; and (f) displaying by theclient application at least one first refined search result and a visualrepresentation of a refinement relationship between the first searchquery and the first refined search query.
 2. The method of claim 1,wherein: (c) includes displaying by the client application a firstplurality of buttons selectable by a user, each button in the firstplurality of buttons corresponding to one of the first suggested searchquery refinements and including text representative of that suggestedsearch query refinement; and (d) is receiving by the client applicationfrom a user a selection of a button from the first plurality of buttons.3. The method of claim 2, wherein (f) includes displaying by the clientapplication a visual indication that the button has been selected. 4.The method of claim 3, further comprising: (g) receiving by the clientapplication from a user via the at least one first graphical object asecond selection of one of the first suggested search query refinements,the second selection corresponding to a second refined search queryincluding the at least one first search term and at least one secondadditional search term; (h) receiving by the client application from thesearch engine second refined search results in respect of the secondrefined search query; and (i) displaying by the client application atleast one second refined search result and a visual representation of arefinement relationship between the first search query and the secondrefined search query.
 5. The method of claim 4, further comprising: (j)displaying by the client application, concurrently with the visualrepresentation of a refinement relationship between the first searchquery and the second refined search query, a visual indication that theat least one first refined search result was displayed before the atleast one second refined search result was displayed.
 6. The method ofclaim 4, wherein: (c) includes displaying by the client application afirst plurality of buttons selectable by a user, each button in thefirst plurality of buttons corresponding to one of the first suggestedsearch query refinements and including text representative of thatsuggested search query refinement; (d) is receiving by the clientapplication from a user a selection of a first button from the firstplurality of buttons; and (g) is receiving by the client applicationfrom a user a selection of a second button from the first plurality ofbuttons.
 7. The method of claim 6, wherein: (f) includes displaying bythe client application a visual indication that the first button hasbeen selected; and (i) includes displaying by the client application avisual indication that the second button has been selected.
 8. Themethod of claim 7, further comprising: (j) displaying by the clientapplication, concurrently with the visual indication that the secondbutton has been selected, a visual indication that the first button wasselected before the second button was selected.
 9. The method of claim1, further comprising: (g) receiving by the client application from thesearch engine second suggested search query refinements, each of thesecond suggested search query refinements corresponding to afurther-refined search query including the at least one first searchterm, the at least one first additional search term, and at least onefurther additional search term; (h) displaying by the clientapplication, apart from the search bar and apart from the firstsuggested search query refinements, the second suggested search queryrefinements, the second suggested search query refinements beingselectable by a user via at least one second graphical object; (i)receiving by the client application from a user via the at least onesecond graphical object a second selection of one of the secondsuggested search query refinements, the second selection correspondingto a further-refined search query including the at least one firstsearch term, the at least one first additional search term, and at leastone further additional search term; (j) receiving by the clientapplication from the search engine further-refined search results inrespect of the further-refined search query; and (k) displaying by theclient application at least one further-refined search result and avisual representation of a refinement relationship between the firstsearch query, the first refined search query, and the further-refinedsearch query.
 10. The method of claim 9, wherein: (c) includesdisplaying by the client application a first plurality of buttonsselectable by a user, each button in the first plurality of buttonscorresponding to one of the first suggested search query refinements andincluding text representative of that suggested search query refinement;(d) is receiving by the client application from a user a selection of afirst button from the first plurality of buttons; (h) includesdisplaying by the client application, apart from the first plurality ofbuttons, a second plurality of buttons selectable by a user, each buttonin the second plurality of buttons corresponding to one of the secondsuggested search query refinements and including text representative ofthat suggested search query refinement; and (i) is receiving by theclient application from a user a selection of a second button from thesecond plurality of buttons.
 11. The method of claim 1, furthercomprising: (g) receiving by the client application from a user via theat least one first graphical object a tentative selection of one of thefirst suggested search query refinements, the tentative selectioncorresponding to a tentative refined search query, the tentative refinedsearch query including the at least one first search term and at leastone tentative additional search term; and (h) displaying by the clientapplication in the search bar the tentative refined search query. 12.The method of claim 11, wherein: (c) includes displaying by the clientapplication a first plurality of buttons selectable by a user, eachbutton in the first plurality of buttons corresponding to one of thefirst suggested search query refinements and including textrepresentative of that suggested search query refinement; and (g) isreceiving by the client application an indication that a pointercontrolled by a user is located over a button from the first pluralityof buttons.
 13. The method of claim 1, wherein the analysis of groups ofrelated search queries includes an analysis of past user behaviors ofusers having submitted the related search queries.
 14. The method ofclaim 1, wherein the analysis of groups of related search queriesincludes: filtering the related search queries to only those identifiedas having provided search results which provided a user with informationsought by the user; grouping the filtered related search queries intothe groups based on subsequent user behaviors of the users; anddetermining a suggested search query refinement for each of at leastsome of the groups.
 15. The method of claim 14, wherein grouping thefiltered related search queries into the groups based on subsequent userbehaviors of the users includes identifying common Internet resourceshaving been visited by the users after they were provided with searchresults in response to the filtered related search queries.
 16. A methodof providing to a client application running on at least one digitalelectronic device in communication with a search engine a plurality ofuser-selectable refinements to a first search query including at leastone first search term, the method comprising: (a) receiving by thesearch engine from the client application the first search query; (b)effecting by the search engine a first search in respect of the firstsearch query yielding first search results; (c) determining firstsuggested search query refinements based at least in part on an analysisof groups of related search queries being related to the first searchquery, each of the first suggested search query refinementscorresponding to a refined search query including the at least one firstsearch term and at least one additional search term; (d) sending by thesearch engine to the client application the first search results, thefirst suggested search query refinements, and instructions fordisplaying (1) at least one first search result and (2) apart from asearch bar, the first suggested search query refinements, the firstsuggested search query refinements being selectable by a user via atleast one first graphical object; (e) effecting by the search engine afirst refined search in respect of a first refined search queryincluding the at least one first search term and at least one firstadditional search term, the first refined search yielding first refinedsearch results; and (f) sending by the search engine to the clientapplication the first refined search results and instructions fordisplaying at least one first refined search result and a visualrepresentation of a refinement relationship between the first searchquery and the first refined search query.
 17. The method of claim 16,wherein (d) includes sending by the search engine to the clientapplication instructions for displaying a first plurality of buttonsselectable by a user, each button in the first plurality of buttonscorresponding to one of the first suggested search query refinements andincluding text representative of that suggested search query refinement.18. The method of claim 17, wherein (f) includes sending by the searchengine to the client application instructions for displaying a visualindication that a button from the first plurality of buttons has beenselected.
 19. The method of claim 16, further comprising: (g) effectingby the search engine a second refined search in respect of a secondrefined search query including the at least one first search term and atleast one second additional search term, the second refined search queryyielding second refined search results; and (h) sending by the searchengine to the client application the second refined search results andinstructions for displaying at least one second refined search resultand a visual representation of a refinement relationship between thefirst search query and the second refined search query.
 20. The methodof claim 19, further comprising: (k) sending by the search engine to theclient application instructions for displaying, concurrently with thevisual representation of a refinement relationship between the firstsearch query and the second refined search query, a visual indicationthat the at least one first refined search result was displayed beforethe at least one second refined search result was displayed.
 21. Themethod of claim 19, wherein (d) includes sending by the search engine tothe client application instructions for displaying a first plurality ofbuttons selectable by a user, each button in the first plurality ofbuttons corresponding to one of the first suggested search queryrefinements and including text representative of that suggested searchquery refinement.
 22. The method of claim 21, wherein: (f) includessending by the search engine to the client application instructions fordisplaying a visual indication that a first button from the firstplurality of buttons has been selected; and (h) includes sending by thesearch engine to the client application instructions for displaying avisual indication that a second button from the first plurality ofbuttons has been selected.
 23. The method of claim 22, furthercomprising: (k) sending by the search engine to the client applicationinstructions for displaying, concurrently with the visual indicationthat the second button has been selected, a visual indication that thefirst button was selected before the second button was selected.
 24. Themethod of claim 16, further comprising: (g) sending by the search engineto the client application second suggested search query refinements,each of the second suggested search query refinements corresponding to afurther-refined search query including the at least one first searchterm, the at least one first additional search term, and at least onefurther additional search term, and instructions for displaying, apartfrom the search bar and apart from the first suggested search queryrefinements, the second suggested search query refinements, the secondsuggested search query refinements being selectable by a user via atleast one second graphical object; (h) effecting by the search engine afurther-refined search in respect of a further-refined search queryincluding the at least one first search term, the at least one firstadditional search term, and at least one further additional search term,the further-refined search yielding further-refined search results; and(i) sending by the search engine to the client application thefurther-refined search results and instructions for displaying at leastone further-refined search result and a visual representation of arefinement relationship between the first search query, the firstrefined search query, and the further-refined search query.
 25. Themethod of claim 24, wherein: (d) includes sending by the search engineto the client application instructions for displaying a first pluralityof buttons selectable by a user, each button in the first plurality ofbuttons corresponding to one of the first suggested search queryrefinements and including text representative of that suggested searchquery refinement; and (g) includes sending by the search engine to theclient application instructions for displaying, apart from the firstplurality of buttons, a second plurality of buttons selectable by auser, each button in the second plurality of buttons corresponding toone of the second suggested search query refinements and including textrepresentative of that suggested search query refinement.
 26. The methodof claim 16, wherein (d) includes sending by the search engine to theclient application instructions for displaying in the search bar, uponreceiving from a user via the at least one first graphical object atentative selection of one of the first suggested search queryrefinements, a tentative refined search query corresponding to thetentative selection, the tentative refined search query including the atleast one first search term and at least one tentative additional searchterm.
 27. The method of claim 16, wherein (d) includes: sending by thesearch engine to the client application instructions for displaying afirst plurality of buttons selectable by a user, each button in thefirst plurality of buttons corresponding to one of the first suggestedsearch query refinements and including text representative of thatsuggested search query refinement; and sending by the search engine tothe client application instructions for displaying in the search bar,upon receiving an indication that a pointer controlled by a user islocated over a button from the first plurality of buttons, a tentativerefined search query corresponding to the tentative selection, thetentative refined search query including the at least one first searchterm and at least one tentative additional search term.
 28. The methodof claim 16, wherein (c) includes analyzing past user behaviors of usershaving submitted the related search queries.
 29. The method of claim 16,wherein (c) includes: filtering the related search queries to only thoseidentified as having provided search results which provided a user withinformation sought by the user; grouping the filtered related searchqueries into the groups based on subsequent user behaviors of the users;and determining a suggested search query refinement for each of at leastsome of the groups.
 30. The method of claim 29, wherein grouping thefiltered related search queries into the groups based on subsequent userbehaviors of the users includes identifying common Internet resourceshaving been visited by the users after they were provided with searchresults in response to the filtered related search queries.